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Discontinued as of December 31, 201 1
LT-S
2. Speci?cations
Characteristics
Contact
Rating
Item
Arrangement
Contact resistance (Initial)
Contact material
Nominal switching capacity (resistive load)
Max. switching power (resistive load)
Max. switching voltage
Max. switching current
Min. switching capacity (reference value)* 1
Insulation resistance (Initial)
Speci?cations
1 Form A
Max. 100 m ? (By voltage drop 6 V DC 1A)
AgSnO 2 type
5A 277V AC
1,385VA
277V AC
5A (AC)
100mA, 5V DC
Min. 1,000M ? (at 500V DC) Measurement at same location as “Breakdown voltage” section.
Breakdown voltage
(Initial)
Between open contacts
Between contact and coil
1,000 Vrms for 1 min. (Detection current: 10 mA)
4,000 Vrms for 1 min. (Detection current: 10 mA)
Electrical
characteristics
Temperature rise (coil)
Surge breakdown voltage* 2
(Between contact and coil) (Initial)
Operate time (at nominal voltage) (at 20 ° C 68 ° F )
Release time (at nominal voltage) (at 20 ° C 68 ° F )
Max. 35 ° C 95 ° F (By resistive method, nominal coil voltage applied to the coil;
contact carrying current: 5A, at 70 ° C 158 ° F )
10,000 V
Max. 15 ms (excluding contact bounce time.) (Initial)
Max. 5 ms (excluding contact bounce time) (Without diode) (Initial)
Mechanical
characteristics
Shock resistance
Vibration resistance
Functional
Destructive
Functional
Destructive
100 m/s 2 (Half-wave pulse of sine wave: 11 ms; detection time: 10 μ s.)
1,000 m/s 2 (Half-wave pulse of sine wave: 6 ms.)
10 to 55 Hz at double amplitude of 1.5 mm (Detection time: 10 μ s.)
10 to 55 Hz at double amplitude of 1.5 mm
Expected life
Conditions
Mechanical (at 180 times/min.)
Electrical (at 20 times/min.)
Conditions for operation, transport and storage* 3
Min. 10 6
Min. 5 × 10 4 (5A 277V AC) (resistive load at 20 ° C 68 ° F )
Ambient temperature: –40 ° C to +70 ° C –40 ° F to +158 ° F ,
Humidity: 5 to 85% R.H. (Not freezing and condensing at low temperature),
Air pressure: 86 to 106kPa
Unit weight
Max. operating speed (at nominal switching capacity)
20 times/min.
Approx. 4 g .14 oz
Notes: *1. This value can change due to the switching frequency, environmental conditions, and desired reliability level, therefore it is recommended to check this with the
actual load.
*2. Wave is standard shock voltage of ± 1.2 × 50 μ s according to JEC-212-1981
*3. The upper limit of the ambient temperature is the maximum temperature that can satisfy the coil temperature rise value. Refer to Usage, transport and storage
conditions in NOTES.
REFERENCE DATA
1. Max. switching power (AC resistive load)
100
2. Coil temperature rise
Sample: ALTS3125, 6 pcs.
Point measured: coil inside
Contact current: 0 A, 5A
50
3. Ambient temperature characteristics and coil
applied voltage
300
10
40
20 ° C 5A
20 ° C 0A
70 ° C 5A
70 ° C 0A
200
Limit line at coil inside
temperature 130 ° C
(contact current: 5 A)
Limit line at coil inside
temperature 115 ° C
(contact current: 5 A)
5
30
1
20
10
0
100
0
Pick-up voltage
(hot start: 5 A, 100%V)
Pick-up voltage
(cold start: no energizing to coil and contact)
0
10
100
60
80
100 120
140
0
20
40 60 80
100
120
Contact voltage, V AC
4. Electrical life test
(5 A 277 V AC, resistive load)
Sample: ALTS3125, 6 pcs.
Operation frequency: 20 times/min.
Coil applied voltage, %V
Change of pick-up and drop-out voltage
12
Ambient temperature, ° C
Change of contact resistance
50
45
(ON/OFF = 1.5s: 1.5s)
Ambient temperature: 20 ° C 68 ° F
Circuit:
Contact
welding
detection
10
8
6
4
Pick-up voltage
Max.
x
Min.
40
35
30
25
20
15
Max.
x
277V AC
12V DC
and Mis-
contacting
detection
circuit
2
0
0
Drop-out voltage
2.5
Max.
x
Min.
5
10
5
0
0
2.5
Min.
5
No. of operations, × 10 4
No. of operations, × 10 4
Panasonic Corporation
Automation Controls Business Unit
industrial.panasonic.com/ac/e/
ASCTB202E 201201-T
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